Power lines and ionizing radiation.

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": "power line",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Ionizing radiation dose rate near ground level (thermoluminescence detector measurements)",
    "Magnetic field measurements near a utility power line"
  ],
  "main_findings": "Magnetic field and ionizing radiation dose rate were measured near ground level up to about 100 m from a transmission line from the Kewaunee Nuclear Power Plant during plant operation and during shutdown for refueling. The authors report no evidence that dose rate differed significantly in the presence versus absence of the power-line magnetic field.",
  "effect_direction": "no_effect",
  "limitations": [
    "No sample size or number of measurements reported in the abstract.",
    "Magnetic field magnitude, power-line characteristics, and statistical methods are not described in the abstract.",
    "Findings are specific to one setting (vicinity of a particular transmission line and nuclear plant) and may not generalize."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "power line",
    "magnetic field",
    "ELF",
    "ionizing radiation",
    "dose rate",
    "thermoluminescence detectors",
    "nuclear power plant",
    "environmental measurements"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Measurements were near a utility power line; could relate to utility/industrial environments, though no worker population is described."
    }
  ]
}